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US Patent 7971918 Extendable sleeper and method of operation

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Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7971918
Date of Patent
July 5, 2011
Patent Application Number
12509865
Date Filed
July 27, 2009
Patent Citations Received
‌
US Patent 12103471 Vacuum-formed insulated van expansion capsules
3
Patent Primary Examiner
‌
Jason S. Morrow
Patent abstract

Embodiments described herein relate to extendable sleepers for a tractor and methods of operating such a sleeper. In one embodiment, the tractor is connectable with a trailer. The trailer has a front surface. The extendable sleeper comprises a fixed portion disposed on the tractor, an extendable portion attached to the fixed portion, the extendable portion being movable between a retracted position and an extended position, and a mover operatively connected with the extendable portion for moving the extendable portion between a retracted position and an extended position. A control system is operatively connected with the mover for controlling operation of the mover. The control system operates in an extension mode where position of the extendable member is adjustable, a teach mode where a significant location of the extendable member is programmed into the control system, and an automatic mode where position of the extendable member is maintained.

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